Improvement in perforators for printing-presses



J. A. CARRUTH. PERFOR-ATORS FOR PRINTING-PRES SES.

No. 193,482. Patented July 24,1877.

I F 1 7 i 1' B L l WITNESSES: z B INVENTUB: I

. r a y I m N.FETERS, PHOTO-LITHOGRAPHER WASHINGTON. D C

UNITED STATES EEEEEEE JAMES A. (JARRUTH, OF TOPEKA, KANSAS.

IMPROVEMENT IN PERFORATORS FOR PRINTING-PRESSES.

Specification forming part of Iietters Patent No. 193,482, dated July24, 1877; application filed January 6, 1877.

To all whom it may concern Be it known that I, JAMES A. OARRUTH, ofTopeka, in the county of Shawnee and State of Kansas, have invented anew and Improved Perforator for Printing-Presses, of which the followingis a specification Figure 1 is a front elevation of my im provedperforator, showing a part of the nipper-frame to which it is attached.Fig. 2 is a side elevation.

Similar letters of reference indicatelcorresponding parts.

The invention consists in providing the frisket-finger of aprinting-press with perforating-teeth, as hereinafter described.

Referring to the drawings, A is a perforator, which is triangular incross-section, and is provided with a cutting-edge, a, that is serrated,and with asquare end piece,B, through which a hole is bored forreceiving a bolt, b, that secures it to the nipper frame, a portion ofwhich is indicated by U, and shown in dotted lines.

The perforator moves with the nippers, and when the platen presses thepaper against the face of the type,-it also forces it against theserrated edge of the perforator which is backed up by the furniture ofthe chase. The paper is thus punctured along the line upon which it isto be separated, and the holes are more or less numerous, according asthe serrations in the perforator are coarse or fine.

It will thus be perceived that my invention consists of a knife-likepiece of metal with a serrated or notched front and broad back, forperforating paper so that the latter may be easily detached from a stubafter binding, or for perforating tickets so that they may be easilydetached from each other. The serrated edge is constructed with theperforators twice the length of intermediate notches. The perforator isengaged by a piece of furniture in the form which presses and drives theserrated edge into the paper.

I am aware that it is not new to use a notched knife on the tympan of aprintingpress for cutting double-sized paper, and leaving a portionuncut by omitting some of the teeth, but my perforator is fastened onlyat one end, and serves as one of the nipping-fingers.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- In printing-presses, a frisket-finger provided withperforatingteeth, arranged on edge a, substantially as and for thepurpose specified.

JAMES A. GARRUTH.

Witnesses:

E. P. HARRIS, HENRY N. FABEY.

